Active Support Shaft Error

Hello, I have a problem with the active support shaft on slot 1 of m AMS unit:
I cleaned the AMS and saw some rubber particles from the rubber rolls on the active support shaft laying around underneath this shaft and then I noticed that the complete shaft turns pretty hard and has a squeaking noise compared to the other slots of the AMS.
The shaft has some play to the left and right side but this is the same on the other slots but I could not figure out where those rubber rolls have contact that rubber particels lay around…

Does anyone had the same problem? Should I buy a new Support Shaft to solve this problem?

Thanks!